Beam hanger



BEAM HANGER Filed Oct. 11, 1934 2 Sheets-Sheet l INVENTOR. (/GusrfiM/EE.

ATTORNEYf BEAM HANGER A. R. MAIER Filed Oct. 11, 1934 Tim: 11

W2 I l ill 1 M 1 H, l 25 r l 25 l 20 l 19 14 77/ 75 Q J 54 i 1 .Q i l fI 32 i i 1 5/ 26 2 Sheets-Sheet 2 5/ INVENTOR.

AUGUJTJEMI/EE.

ATTORNEYS Patented June 16, 1936 I UNITED STATES PATENT-OFFICE} AugustIt. Maier, Dallas. Tex., assignor to Oil Well Supply Company, Dallas,Tex., a corporation of New Jersey Application October 11, 1934,. SerialNo. 747,975 8Claims. (01255-15) The present invention relates to ahanger to a minimum by providing for the proper adjustconnect pumpingapparatusto the end of a rement of the hangerrelative to the arctraversed ciprocating or walking beam or similar driving by the end ofthe walking beam, and by promechanism. viding a connection to thepolished rod as far as .5 Heretofore beam hangers have been used topossible from the end of the beam and to give connect the end of awalking beam to a rod the apparatus a maximum flexibility.. known as thepolished rod which passes through The various features of the inventionare illusa tubing packing and is connected to sucker rods trated in theaccompanying drawings in which extending to the piston of a pump locatedat the Y Fig. 1 is a side view of an end of the walking bottom of awell. The reciprocating or rocking beam and a hanger'embodying apreferred form 10 motion of the walking beam is thus transmitted of myinvention.

to the pumping mechanism. In its rocking mo- Fig. 2 is an end view ofthe apparatus shown in tion the end of the walking beam travels an arcFig. 1. and the upper end of the beam hanger must ac- Fig. 3 isa topplan view of a lower yoke for cordingly be deflected sidewise as the endof the connecting the hanger to the polished rod. 15

beam passes between the mid-point and either In my invention thepolished rod is connected end of its arc of travel. Owing to the greatto the end of the walking beam by means of a weight of the suspendedpumping rods and the connection having a swinging or hinge mountliquidbeing pumped, particularly in very deep ing which may be adjusted in adirection longiwells, it is desirable to avoid as much as possibletudinal to that of the walking beam so that the 20 any deflection of thepull of the beam and its distance of this connection from the axis ofthe hanger mechanism from the vertical center line beam may be readilyadjusted inaccordance with of the pump or sucker rod. the amplitude ofthe rockingof the beam. The

' It has, therefore, been customary to position mounting of thisconnection on the beam may be the end of the walking beam above the wellso accomplished in any suitable manner as by means 25 that thedeflection will not take place entirely to of a saddle having ashelflike extension on which one side, but will be divided equally andthus a the swinging support is slidably mounted and to maximumdeflection of the hanger mechanism which it may be secured in anyposition of adwill be avoided. It is necessary at times to adjustment.Accurate adjustment of the position just the stroke of the pump andconsequently of this mounting may be accomplished byadjust- 30 the swingof the walking beam and, in the coning screws or other equivalentdevices. structions heretofore used, this will either length- Themounting conveniently will take the for en or shorten the part of thearc of travel. on. of a shaft and journal, one element of which is oneside of the center line of the well, thereby secured to the supportingsaddle and. the other destroying the proper apportionment of the arc ofwhich is free to swing and from which is sus- 35 and causing a greaterdeflection of the hanger pended a connecting means. This connecting fromthe center line of the well than is necessary. means may be of anysuitable form but is most Thelangle of deflection between the polishedconvenient in the form of a pair of straps or rod and the hanger will begreater for a given rods having a yoke at their lower ends through arc,the shorter the length of the members conwhich passes the polished rod.The yoke is so 40 necting the beam to the polished rod. Thegreatsupported on the rod as to be self-adjusting and er the distancefrom the end of the beam that to accommodate itself to unevenness in thelength the hanger is secured to the polished rod, the less of thesupporting rods or straps. The polished will be the angle of pull forany given swing or rod is supported in the yoke by means of a uniarc ofthe Walking beam and, accordingly, the less versal support such as aball and socket joint. 45

. will be the sidewise component of stress. The With this arrangementthe connection of the sidewise stresses will also be lessened byprovidstraps to the polished rod may take place at the ing maximum offlexibility of swing of the various lowest possible point on the latterand thereby elements so that no appreciable force required provide amaximum utilization of the distance 5 to swing the elements need beadded to the sidebetween the polished rod and the end of the wisecomponent of stress necessarily imposed by walking beam for theconnecting member. the swinging end of the walking beam. Referring moreparticularly to the accompany- The objects of the present invention areto ing drawings, a hanger saddle I0 is mounted on provide a beam hangerin which the sidewise the end of a walking beam ll being for thispurstresses on the polished rod may be reduced to pose preferablyprovided with hooked or flanged 55 extensions I2 and I3 on the upper andlower surfaces of the beam respectively. A shelflike extension I4projects outwardly from the saddle I8 and is preferably strengthened byribs I5. A shaft or journal and bearing assembly I 6 is mounted on theshelf I4 to support a pair of downwardly depending metal straps or rodsI1 to permit free swinging in the plane of swinging of the beam II.

The shaft and journal assembly I6 comprises a bearing I8 slidablyresting on the upper surface of the shelf I4 and secured thereto invarious positions of adjustment by studs I9 extending through suitableslotsin the shelf I4 and provided with nuts 20. Adjusting screws 2I passthrough upward extensions in the shelf I4 enabling the bearing I8 to beshifted to accurate positions of adjustment, the nuts 20 being loosenedbefore such adjustment and tightened thereafter.

A short shaft or journal 22 is journalled in the chamber.

It will be apparent from the above construction that the straps or rodsI1 swing freely in the manner of a hinge that is maintained well oiledand that the position of this swinging support may be readily adjustedwith great accuracy in accordance with any change in the amplitude and,consequently, the shifting of the are through which the end of the beamswings.

The lower ends of the rods or straps I 1 support a yoke 28 through whichthe polished rod 29 or other connection to the pumping mechanism passesand in which it is supported. The mounting of the yoke 28 on the strapsI1 is such as to permit the yoke to tilt readily between the straps andaccommodate itself to any unevenness in the length thereof and therebyto avoid the necessity for a fine and accurate adjustment of theselengths. For this purpose the ends of the yoke through which the rods I1pass are provided on their under surfaces with cylindrical recesses, theaxes of these recesses being at right angles to the straps or rods I1and to the plane between these rods. On the end of each rod is mounted acylin' drical seat 30 fitting its respective cylindrical recess in theyoke 28. The seats 30 are secured on the rods I1 by lock nuts 3I orother suitable means. This recess and seatarrangement enables the yoketo tilt in the plane of the rods I1 but not in the plane of swinging of'the walking beam II.

The polished rod 29 passes upwardly through an opening 32 in the yoke 28midway of the rods I1. The opening 32 is somewhat larger than thediameter of the polished rod 29 to permit a swivel movement between therod and the yoke. At its upper end the opening 32 is widened to aspherical curvature to receive a support 33 in the form of a'sphericalsegment on which the upper end of the polished rod is mounted by meansof a clamp 34. The polished rod is thus secured to the yoke in such away that it may swing readily in any direction with great freedom andthus avoid any binding that would cause a sidewise stress.

The polished'rod is prevented from hanging up on the downstroke by meansof a clamp 35 on the'polish rod which prevents it from sliding upwardlythrough .the opening 32. The polished rod may be inserted sidewisethrough the yoke 28 and secured therein by means of a cap or retainingplate 36. 7

It will be noted that the straps I'I swing between the axis of the shaft22, which is generally level with the axis of rocking of the beam I I,and the center of the spherical support 33. By positioning the yoke asnear as possible to the packing in the tubing the maximum possiblelength for the rods I1 is thus provided.

What I claim is 1 1. A beam hanger comprising a supporting saddle havinga sliding surface extending longitudinally thereof, a bearing slidablymounted thereon, means to secure said bearing on said saddle indifferent positions of adjustment, a shaft journalled in said bearing,and means depending from said shaft to secure a pump rod.

2. A beam hanger comprising a supporting saddle having a sliding surfaceextending longitudinally thereof, a bearing slidably mounted thereon,adjusting screws to adjust the position of said bearing on saidsupporting saddle, means to secure 'said bearing on said saddle indifierent positions of adjustment, a shaft journalled in said bearing,and means depending from said shaft to secure a pump rod thereto.

3. A beam hanger comprising a supporting saddle having a sliding surfaceextending longitudinally thereof, a bearing and shaft assembly slidablymounted thereon, securing means for securing said bearing and shaftassembly in different positions of adjustment on said saddle, andconnecting means depending from said bearing and shaft assembly.

4. A beam hanger comprising a supporting saddle having a sliding surfaceextending longitudinally thereof, a bearing and shaft assembly slidablymounted thereon, securing means for securing said bearing and shaftassembly in different positions of adjustment on said saddle, andconnecting means depending from said bearing and shaft assembly, saidconnecting means comprising a pair of straps.

5. A beam hanger comprising a supporting saddle having extensions tohook onto the end of a beam and a shelf portion extending outwardlytherefrom, a bearing and shaft assembly mounted on the upper surface ofsaid shelf extension, said shelf having slots therethrough, and studsextending from said bearing and shaft assembly through said slots tosecure said bearing and shaft assembly in different positions on saidshelf.

6. A beam hanger comprising a supporting sad dle having extensions to besecured to the end of a beam and a shelf extending outwardly from theend of said beam, a bearing and shaft assembly mounted on said shelf,said shelf having slots, said bearing and shaft assembly having securingstuds extending through said slots, and adjusting screws in said saddleextending to opposite sides of said shaft and bearing assembly to adjustthe latter longitudinally of said beam.

7. A beam hanger comprising a supporting saddle having means forsecuring it to .the end of a beam and a shelf extending outwardly fromthe end of said beam, a bearing and shaft assembly mounted on said shelfextension, means for ad-' justing the bearing and shaft assembly on saidshelf longitudinally of said beam, said bearing and shaft assemblyhaving parts extending past the opp'osite sides of said shelf, anddepending straps extending downwardly from said projecting portions.

8. A beam hanger comprising a supporting saddle having means to attachit to the end of a walking beam and having a shelf extending forwarcllyfrom the end of said beam, a bearing on said shelf, means to adjust theposition of said bearing, a shaft in said bearing and projecting beyondthe edges of said shelf, and straps mounted on said projecting ends, oneat each side of said shelf.

AUGUST R. MAIER.

